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The Prairie Burn 100 is about staying active and enjoying the great outdoors with a one-day event on the second June of each year with gravel rides and a 5K Fun Run starting and finishing in Grinnell, Iowa's Central Park. The 2024 gravel ride event offered cyclists new 25, 50 and 100 mile routes and a race challenge for the 100 mile riders. All riders were invited to test their skills in the Burner Challenge segment dash for cash on each of the loops. Along with other family-friendly activities, the 5K Fun Run provides a nice Saturday morning option to race or pace yourself for a healthy way to get moving! For more information on the 2025 event, follow Prairie Burn 100 on Facebook & Instagram or sign up for our emails.

2024 routes:


The 5K Fun Run at the Prairie Burn 100 offers a fun and healthy activity for the whole family! The 2024 event marked the first year with a timing option and all participants received a free t-shirt. The route takes participants throughout the Grinnell community to return for our beer garden, live music, and food trucks. Sign up for emails and check back for more info on the 2025 event!



9 – 10 A.M.

Bring your mat and join us at the Central Park amphitheater for an hour of yoga. All ages welcome. No charge.


10 A.M – 12 P.M.

With this event laddering up to Grinnell's weekly farmer's market, fresh produce, artistic creations and many other items will be available for sale.


10:30 A.M. – 12 P.M.

Drake Community Library and the Grinnell College Museum of Art will offer free hands-on art and literacy activities for kids and families with drawing, 2 & 3-D collage projects, beading, truck glittering, painting, bookmaking, type-a-thon, and reading activities. No registration is necessary. Supported by Grinnell Education Partnership & AmeriCorps.  


11 A.M. – 3 P.M.

Solera will set up shop in Central Park to offer beer and wine, and food trucks will line up nearby with a variety of food options. Stop by after riding or meet friends at the start/finish line with a drink and grub!


12 – 2 P.M.

The Surf Zombies return to Central Park to set the ambiance for the afternoon. All are welcome to enjoy free music in the park!


2 – 3 P.M.

Join us for the final event of the day – announcing winners on stage in Central Park. Photo ops included!

Family Activities





Important event info and rules. Please read before race day. 5K Fun Run info is at the end.

1. The PB100 will occur rain or shine! All bike routes will have hard surface rain re-routes if needed, while the Fun Run may be a mud run…

2. Have FUN. Food trucks and our Beverage Garden will be open from 11-3.


3. Community comes first, always! Out on the route, do not litter and be discreet with any nature breaks.

4.  Helmets are required to ride.

5. Aid Stations will be located at:

  1. 10 miles (with van bailout option)

  2. 25 miles (Central Park)

  3. 35 miles (on route)

  4. 50 miles (Central Park)

  5. 75 miles (roving aid station)

6. Know how to fix a flat and/or ride with someone who does. Please have a cell phone and a bailout plan as we’ll have limited ability to pick up riders with mechanicals. Call or text Jennifer Cogley, race director, at 641-990-0216 if you need assistance during the race. There will be a final truck sweep of the entire course.

7. Obey all traffic laws. The course will be open to vehicle traffic. The 25 and 50 mile route turns will be marked with arrows. All routes will be available as Ride With GPS files, and route maps will be available at signup.

8. Ride Right, especially when cresting a hill! Front & rear blinky lights are a good idea.

9. 100 Mile Challenge Cup Race and Burner Challenge Segment results will be verified by the PB100 Race Director Committee.


10. Burner Challenge Segments will be recorded with Strava. You must have a Strava account and use it to track and post your ride to be eligible for the King of the Mountain, Queen of the Mountain, and Monarch of the Mountain (non-binary rider) Grinnell Chamber Bucks prizes on these three challenge segments.

11. E-bikes are welcome for all distance rides, but e-bikers are not eligible for awards.

5K Fun Run Info

1. The Fun Run course will be clearly marked, and volunteers will be stationed along the course to keep you on track. The route is a mixture of road, paved trail, and gravel trail.

2. The 5k start/finish line is the same one being used for gravel riders. At the start and finish on Park Street, stay in the designated runners’ chute on the RIGHT side of the road. Cyclists will be directed to the left chute.




Staying in Grinnell? Download our restaurant guide!

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